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| 1. |
How ethanol is prepared in industry? |
| Answer» Sugar industries produce molasses from the sugar cane processing. Molasses have 50 -55% concentration of sugar in the form of sucrose, with chemical formula C12H22O11. This source of compound is used for preparing ethyl alcohol. Ethanol in the form of absolute and rectified spirit can be made from molasses. Basis raw materials for an industry to produce 1 ton of ethyl alcohol requires, molasses up to 5.6 tons, sulfuric acid 27 kg and ammonium sulphate 2.5 kg.The chemical reactions involved for ethanol production from molasses:Main reaction:C12H22O11 + H2O → 2C6H12O6 ,with enzyme invertase.C6H12O6 → 2C2H5OH + 2CO2 -31.2 KCal ,with enzyme zymase.Side reaction:2C6H12O6 + H2O → ROH +RCHO (high molecular weight alcohols C2H5OH) | |